Stove



Sept. 6, 1932. A ANDERSON 1,875,545

STOVE Filed Jan. 28, 1929 3 Sheets-Sheet l 3 (g I INVENTOR.

, Wm 22/ W aw $3M mm W ATTORNEY Sept. 6, 1932. A. E. ANDERSON STOVEFiled Jan. 28. 1929 5 Sheets-Sheet 2 INVENTOR.

116A ATTORNEY Sept. 6, 1932. A. E. ANDERSON STOVE Filed Jan. 28, 1929 5Sheets-Sheet 3 IN V EN TOR.

111'4 ATTORNEY Patented Sept. 6, 1932 UNITED STATES ALBERT E. ANDERSON,OF GRANDVIEW, MISSOURI.

s'rovn Application filed J'anuary 28, 1929. Serial No. 335,503.

7 My invention provides further novel means by which the draft may beautomatically regulated to preserve a minimum of variation intemperature. I

My invention also provides in a stove having a magazine and a gratetherebelow, novel means by'which the, lower end of the magazine may beclosed while the contents on the grate are being dumped My inventionprovides further novel bafiiing means by which the rapid escape of theheated products of combustion may be prevented. a

My invention provides further novel means by which the burning fuel isretained in a form in wh ch it will have a maximum of radiating effect.

My invention provides still further novel means for supporting the hoverhood.

My invention provides. ,further a stove which is simple, cheap, durable,not likely to get, out of order, and which is easily and.

cheaply operated. a

The novel features of my invention are hereinafter fully described "andclaimed.

In the accompanying drawings, which illustrate the preferred embodimentof my invention,

Fig. 1 is a central vertical sectional view of my improved stove.

Fig. 2 is a side elevation of the same.

Fig. 3 is another side elevation of the stove.

Fig. 4 is an enlarged fragmental verticalpartly broken away and partsremoved, show mg a portion of the grate and supporting base.

Fig. 6 is a section, enlarged, on the line ianralaT omen 66 of Fig. 1,the hover hood and some parts below being omitted; V

Fig. 7 is an enlarged section on the line 7 7 of Fig. 1, parts beingbrokenawayl Fig. 8 is an enlarged top view of the stove,

part of the hover hoodbeing broken away.

' Fig. 9 is an enlarged section on the line 9-9 of Fig. 8. a

Fig-1O is an enlarged fragmental vertical sectional view showing aportion of the base,

part of the grate, and a part of the fire pot. Similar referencecharacters designate similar parts in the different views. y

The body of the stove is provided with a base 1 having on top ahorizontal annular seat 2 provided withacorrugatedinner edge 3,Figs.5and7.

The body also has an upwardly tapering I fire pot 4' having upwardextending-corrugations 5 registering with the corrugated inner edge ofthe seat2. I a i The top part of the body rests on the upper end of thefire pot 4 and forms a combustion chamber 6 into which the fire potdischarges. The combustionchamber 6 has a horizontal baffle portion ormember 7, which for the mostof its periphery is spaced'from the sidewalls of said chamber, so as to form a passage 7 for gaseous products ofcombustion.

The top of the combustion chamber 6 and the baflle member 7 arerespectively provided with holes which register with each otherandthrough which extends an upwardly :remov-' able and verticallyadjustable magazine 8, having a removable cover 9, and which extendscentrally into the fire pot 4. On inwardly extending lugslO of the base1 revolubly rests a grate 11, the periphery of which is encircled by thecorrugated edge 3, and with which edge the grate forms vertical airpassages 12, Figs. 5 and 7. The air passages 12 register and communicatewith the inner channels of the corrugations 5 of the fire pot 4, so thatair can pass upwardly from the ash chamber 13 of the base 1 between theperiphery of the grate 11 and the corrugated edge 3, and. thenceupwardly in the inner channels of the corrugated fire pot 4.

The grate 1.1 has a central downwardly converging hole. 14 which isadapted to have ameter of the lower end of the magazine 8,-

so that, when it is desired to dump ashes from the central portion ofthe grate 11, the deflector 15, when lifted, will uncover the centralhole 14 of the grate, and will close the lower end of the magazine 8 andprevent coal or other fuel therein from passing from the magazine.

The magazine 8 and the deflector 15 are removable through the holes inthe baflie memher 7 and in the top of the combustion chamber 6, throughwhich the magazine normally extends The outer wall of the magazine 8 haslugs 18 supporting the magazine on the top of the combustion chamber 6.

I The combustion chamber 6 is provided with an outlet 19 through whichpass the gaseous products of combustion, and into which discharges theupper end of an air conductor 20, the lower end of which is providedwith an elbow 21, the lower end of which is in close proximity to andregisters with an air inlet 22, with which the adjacent side of the base1 is provided. V V For facilitating the. automatic discharge of soot orashes which may collect in the con ductor at the bottom of the elbow 21,said bottom is inclined, on its upper side, downwardly toward the loweropen end of the elbow, Figs. 1 and4.

Air for combustion enters the ash chamber 13 of the base through the airinlet 22, and passes thence upwardly through the openings in the grate11, which are at the outer side of the imperforate deflector 15, andthrough theair passages 12, at the outer side of the periphery of thegrate 11 into the fire pot 4. The inner channels of the corrugated firepot, which is upwardly converging, cornmunicating with the passages 12,and the presence of the imperforate deflector in the centralportion ofthe fire pot, cause the most of the combustion, which takes place in thefire pot, to be adjacent to the walls of the fire pot, thereby highlyheating such walls, and economically and efiiciently heating theexternal air adjacent to the fire pot. As the coverv 9 of the magazine 8is imperforate, and the imperforate deflector 15 is adjacent to anddirectly under the magazine, the fuel in the magazine isnot ignitedtherein, and the principal combustion takes place at the outer side ofthe zone between the deflector 15 and the lower end of the magazine 8.

The gaseous products of combustion pass from the fire pot 4 around theperiphery of the,

baffle member 7 and out of the combustion chamber 6 through the outlet19 thereof.

For automatically regulating combustion in the stove, I provide meanscontrolled by the changes in the external temperature, which, as shown,comprises a thin vertically disposed disk 23 located between and adaptedto close alternately the air inlet 22 and the air inlet at the lower endof the elbow 21. The disk 23 has extending centrally through it ahorizontal rod 24 slidably mounted in the wall of the elbow 21. Two nuts25 adjustably mounted on the rod 24 clamp against opposite sidesrespectively of the disk 23. Said rod 24 constitutes the stem of thedisk valve 23. By adjusting the nuts 25 and disk 23 on the rod 24, theposition of the disk with respect to the adjacent air inlets may bechanged. By disposing the thin disk 23 edge up, as shown, it will bekept free from deposits of soot, dirt or ashes. By mounting itlongitudinally adjustable on the horizontal rod 24, as described, itsnearness to either of the adjacent air inlets which it is designed toclose mav be determined as desire For normally forcing the rod 24 to theleft, Fig. 4, to close the lower end of the elbow 21, to prevent coldair passing through the conductor 20 into the combustion chamber 6 andout of the outlet 19, and to permit air to enter the inlet 22, toincrease combustion, a coil spring 26 encircles the rod 24 and has oneend bearing against the outer side of the el bow 21, its other endbearing against a washer 27 mounted on the rod 24, saidwasher bearingagainst a pin 28 extending through the rod 24.

To reduce or entirely shut off the air from entering the air inlet 22,when the external temperature reaches a predetermined degree, there isprovided a thermostat, which on being heated, expands and, by bearingagainst the outer end of the rod 24, forces-the latter inwardly so as tomove the disk toward or against the outer end of the tubular portion 29,which forms the air inlet22.

The thermostat shown comprises four expansible units 30, 31, 32 and 33connected in tandem, each containing air, and each having two expansiblecorrugated side members connected at their peripheries, as in similartypes of such units, which are well known.

Two short tubes 34 and 35 respectively connect adjacent side members ofthe units 30 and 31 and 32 and 33, so that these two sets of units havethe units of each set interiorly communicating with each other. Theouter end of the rod 24 has a reduced portion 38 extending into'a recessin one end of a block 3'? fastened to the right side member of the unit33. A similar block 38 is fastened to the right side member 31, Fig. 4,and has extending into its end recess a projection 39 on the adjacentend of a block 40, the other end of which is fastened to the left sidemember of the unit 32. A block 41 is fastened at one end to the leftmember of the unit 30, and has at its other end a cylindrical projection42, which is rotatably fitted in a central hole in the right end of athumb. screw &8, which is rotatably fitted in a threaded hole in one armof a yoke ri, the other arm of which is fastened to the elbow 21.

hen the units are heated, they will expand, and will force the rod 24 tothe right, Fig. 4, thereby moving the disk 23 toward he tubular portion29, so as to close the air inlet 22, if the temperature is great enoughto suiiiciently expand the units to effect this function. By adjustingthe screw t3, the temperature which the valve will close the inlet 22may be predetermined. In expanding the thermostat will compress thespring 26, which, as the units collapse, will move the rod 24; so as tomove the dislr 23 toward the el how 21.

The thermostat and the spring 26 will thus control the passage of airalternately into the ash chamber through the inlet 22 and through theconductor 20, as the external temperature falls and rises,therebycontrolling the heating of the external air, so as to retain thetemperature within a predetermined range.

A flarin g hover hood, comprising two semi circular members and 46hinged to each other at their upper ends, encircles the upper portion ofthe combustion chamber 6, said members being provided respectively attheir upper ends with two half rings l7 and 48, the ends of which arerespectively pivoted to each other by pivot pins 49 which are disposedrespectively in two recesses in the upper ends respectively of twoupstanding posts 50 on the top of the combustion chamber top.

The said posts hold the hover hood from revolving.

There is provided supporting means for the hover hood by which thelatter is supported independently of the stove body. Such supportingmeans, as shown, comprises two semi-circular members 51 adaptedto reston the floor and to encircle the base 1. Each member 51 has at itsrespective ends twoupwardly extending arms 52, which are fas tened tothe adjacent hood member at diametrically opposite sides thereof. Figs.1, 2 and 3. Each of the hood members may be swung upwardly, as shown indotted lines in Fig. 2. Thus, if it is desired to have easy access tothe ash pit door 53, the adjacent hood may be swung upwardly to permitsuch easy access, or for any other desired purpose.

When it is desired to remove ashes or clinkers, the cover of themagazine 8 is removed and the stem 1'? is lifted so as to lift thedeflector from the grade 11 and against the 11115 derside of themagazine, thus closing the lower end of the latter to retain the coaltherein.

If desired, the deflector may be employed to lift the magazine 8entirely out of the combustion chamber 6. Inthe use of softicoal, as afuel, the magazine 8 may be filled, the lid 9 placed thereon, and themagazine then vertically adj ustedupwardly about six inches or-so. Thecoal will spread at the bottomof the magazine, thus increasingthe coalca} pacity approximately twenty percent.

The magazine 8 is reversibleias wellas vertically adjustable andremovable. With the use of semi-hard coal'the magazine 8 maybe inserted.into the combustion chamber in a position the reverse to that showninFig. 1.

It will be noted that the lugs 18, asshown in Fig. 1," are nearer thetop than the bottom of the magazine, so that when reversed, the

magazine. will extend to a greater extent from the combustionchamber,thus increasing the coal capacity. 7 I

The deflector in addition to its function of deflecting the unburnt coaloutwardly from the center of the fire bowl, also effects the function ofpreventing air entering through. the central portion of the grate. Italso performs the additional functions of closing the lower end of themagazine when ashes are to may be-disposed under one member ofthe hoverhood, 46, and supportthe latter in the raised position, shown, indottedlines. Chicks may, and will be inclined to, mount. the roost so disposedthat heat will be thrown from the hover member onto the roost.

I do not limit my invention to the structure shown and described, asmany modificae tions,. within the scope of the appended claims, may bemade without departing from the spiritof my invention.

What I claim is p 1. In a stove, a grate, a magazine above and spacedfrom the grate, and an imperforate upwardly converging deflector adaptedto rest on and close the central portion of said grate and movableupwardly to a position in which it will close the lower end 0 saidmagazine.

2. In a stove, a grate, a. vertically adjustable magazine above andspaced from said grate, and an upwardly converging deflector adapted torest on said grate and movable 11pwardly to aposi-tion in which it willclose the lower end of said magazine.

3. In a stove, a grate, a. vertically adjustable ma-gazine above saidgrate, and an up wardly converging deflector adapted to rest onsaidgrate and to be moved therefrom to Q be dumped and that of lifting th1;,

a position in which it will close the lower end of said magazine, andadapted toliftand be removed with said magazine.

4. In a stove, a grate having a central hole, a magazine above saidgrate, and an upward- 1y converging imperforate deflector adapted torest on said grate and to close said hole and to be lifted to a positionclosing the lower end of said magazine.

5. In a stove, a grate having a central hole,

.a vertically adjustable magazine above said grate, and an upwardlyconverging imperiorate deflector adapted to rest on said grate ,andclose said hole and to be lifted so as to ,close the lower end of saidmagazine and to lift the latter and removable therewith.

; 6. In a stove, a combustion chamber having a top opening, and acylindrical magazine freely removable and reversible end for i endslidable in said opening and having pe ripheral means of support adaptedtorest on said combustion chamber top and disposed nearer to one end ofthe magazine than to the other end thereof.

7. In a stove, a grate, a-magazine above and spaced from said grate, afire pot which has its outer side exposed to the open atmosphere andwhich converges upwardly from Said grate, and a. central u 7 wardlyconverging deflector resting on saic grate in said fire pot and movableupwardly to a position in which it will close the lower end of saidmagazine. e 8. In a stove, an ash chamber having an air inlet at oneside, a combustion chamber having an outlet, an air conductordischarging into said outlet and having an air inlet registering withand spaced from the first v named air inlet, a longitudinallymovablehorizontal rod alined with said inlets, and a valve disposed edge upbetween said inlets and adjustable longitudinally on said rod toward andfrom said inlets and movable by W said rod to positions in which it willalternately close said inlets.

In testimony whereof I have signed my name to this specificationj ALBERTE. ANDERSON.

